Functional bikes. Not Porn not Anti

I love my ti audax/road bike but don't like the idea of the drive train getting clogged up and knackered in the winter.

Which leads me to think of what can I do to protect the bike during the winter months?

Few ideas-

Convert the bike to fixed - it does have semi horizontal dropouts so won't be a problem but it's a bit of a pain and would involve cutting cables - possibly? I'd need new cranks/ and wheels - probably brakes too.

Add rust proof/ti components - drive train - don't even know if this is possible.

Scrap all the above and build a fixed frame for winter duties - easily the most costly.

You sure the 3rd option works out more. Certainly not compared to buying Ti components & drive train. Cheap Winter fixed hack bike surely? Build up a really nice one & you'll be back at square one again, with a bike that's too nice for everyday commuting.